Rubber Washer Reference Site

Rubber Washers For Sealing And Spacing

Rubber washers are industrial spacing components used in fastener assemblies. They are most frequently found to be paired with round and hexagonal headed components, including screws and bolts, as well as nuts and similar industrial fasteners.

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Rubber washers will help to distribute load by broadening and thickening the bearing surface between fasteners, although they may not provide the level of rigid support that’s gained through metal washers. This is why rubber washers are more frequently applied in settings that require unique benefits that come from this material.

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EPDM Washers
Hard Rubber Washers
Large Rubber Washers
Neoprene Rubber Washers
Rubber Flat Washers
Santoprene Washers
Silicone Washers
Small Rubber Washers
Thick Rubber Washers
Thin Rubber Washers

Washers made from industrial quality rubber are used where insulation of electricity, moisture sealing, and assembly stability are needed. Although they are tough but flexible, rubber washers can also be compressed slightly. This property makes them useful as damping and insulating devices. Tremor from one side of the assembly is absorbed and dampened by the rubber. This is useful in equipment with many moving parts as well as various mechanical devices and structures, such as furniture, fans, and drives.

Because of their high coefficient of friction, resistance to wear caused by moisture, and capacity to be compressed, rubber washers can be used in a gasket or sealing capacity. They are very useful for gripping and filling a space, and when sized and fitted correctly, can be used to isolate the flow of liquid and gasses. They are prevalent in plumbing, hydrodynamic, and processing applications because of these capabilities. Rubber washers may also be called hose washers when used to modify the flow of water and prevent leaks between connections.

Rubber washers can be made from a variety of natural and synthetic types of rubber, such as neoprene, silicone, EPDM, and Santoprene. Synthetic or blended types of rubber are now more frequently used than natural rubber washers to prevent issues with deterioration and cracking which can occur when natural a washer becomes too dry or when subjected to regular temperature fluctuations.   

Most of these washers can be found in standard sizes, types, and shapes from standard hardware and parts retailers. If non-standard rubber washers are required or if large quantities are needed, they can be sourced from washer and gasket manufacturers. These providers can offer customized options to suit a wide range of industrial requirements.

What Are The Advantages Of Rubber Washers?

Rubber washers can be used to dampen vibration, seal in gases and liquids, retain tension and stability in fastener assemblies, and provide added support by helping to distribute load. The material’s ability to cushion, stabilize, and fill a space, while retaining flexibility, contributes to these and other advantages.  

Can Rubber Washers Be Used As Gaskets?

Rubber washers, when sized and shaped properly, can be used in a similar capacity as a gasket. Gasket washers will typically have a larger sized inner diameter than a washer that is simply being used around the neck of a bolt or screw, although this can vary based on the specific placement of the gasket washer. If a gasket must fit around a grove, then an o-ring with rounded sides may be more suitable than a washer, which typically has a flat surface, which is meant for load-bearing. The thickness of the rubber washer will also factor into its flexibility and potential to be tightly fitted into a space in order to seal in or out the flow of liquid or air. 

Where To Get Metic Rubber Washers?

Metric rubber washers are sometimes available from conventional retailers. In the U.S. and other countries that use non-metric or inch-based measurements as a standard, metric washers may need to be sourced directly from a washer manufacturer or fastener distributor that maintains a metric inventory.